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通用聚苯乙烯（GPPS）

IUPAC Name	: Poly(1-phenylethene)
Cas Number	: 9003-53-6
HS Code	: 390319
Formula	: (C₈H₈)n

Basic Info

Appearance Name	: Transparent material with a high gloss surface
Common Names	: Crystal polystyrene, Transparent polystyrene, Clear polystyrene
Packaging	: 25 Kg Bag

行业

塑料和聚合物

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Technical Document

Brief Overview

General-purpose polystyrene (GPPS) is a transparent, amorphous thermoplastic polymer composed of styrene monomers linked together through covalent bonds to form long chains. It has a high gloss surface, is rigid and brittle, and is commonly used in applications where clarity and aesthetic appeal are important. GPPS is available in various colors and finishes, including clear, opaque, and frosted, and is easily processed using techniques such as injection molding, extrusion, and thermoforming. GPPS is commonly used in consumer goods such as packaging, housewares, toys, and electronic components, as well as in food service items such as disposable cutlery, plates, and cups.

Manufacturing

The manufacturing process of general purpose polystyrene (GPPS) involves the polymerization of styrene monomers using a free radical initiator. The general steps involved in the process are as follows:

Monomer production: Styrene monomer is produced through the dehydrogenation of ethylbenzene or by steam cracking of naphtha.
Polymerization: The styrene monomer is then polymerized using a free radical initiator, such as peroxide, under controlled conditions of temperature, pressure, and agitation. The initiator initiates the polymerization reaction, resulting in the formation of long chains of polystyrene.
Granulation: The resulting polymer is then cooled and solidified, and it is cut or ground into small granules or pellets.
Extrusion: The granules or pellets are then extruded through a die to produce the desired shape or form of the final product.
Finishing: The extruded product may undergo additional processing, such as cutting, polishing, or coating, depending on the intended use.

Brief Overview

Manufacturing

Monomer production: Styrene monomer is produced through the dehydrogenation of ethylbenzene or by steam cracking of naphtha.
Polymerization: The styrene monomer is then polymerized using a free radical initiator, such as peroxide, under controlled conditions of temperature, pressure, and agitation. The initiator initiates the polymerization reaction, resulting in the formation of long chains of polystyrene.
Granulation: The resulting polymer is then cooled and solidified, and it is cut or ground into small granules or pellets.
Extrusion: The granules or pellets are then extruded through a die to produce the desired shape or form of the final product.
Finishing: The extruded product may undergo additional processing, such as cutting, polishing, or coating, depending on the intended use.